/Engine/Plugins/Compositing/Composure/Source/Composure/Classes/CompositingElement.h
EDITOR ONLY - Specifies an intermediate image to display when picking (if left unset, we default to the final output image)
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Composure|Editor") void SetEditorColorPickerDisplayImage ( [UTexture](API\Runtime\Engine\Engine\UTexture) * PickerDisplayImage )